06/20/2026
blower died within 3 year due to insulation material came loose
Update: I tried the suggestion from the comments to swap the FAN (gray wire, 3rd from the left) with the SPARE (yellow wire) and flipped the power switch back on. I can see the status LED is lit and stay on and I heard the relay click, but the blower fan is still not spinning. According to my troubleshooting, the motor's ECM module is likely dead. It looks like I'll need to disassemble the blower unit to replace that module.
This unit is less than 3 years from a new home, I noticed there is no cold air blowing, and the condenser unit was working, blowing hot air out but the thicker pipe has frost, so I know it was a blower issue, technical came and opened it up, and we found the insulation material covered the intake, the tech checked the wires to confirm there's high voltage coming and he used a short wire to short the blower motors to force it to run, but it still won't start so it was dead and need to replace, cost close to $700 for the labor, the electric controlled motor is under warranty otherwise cost is $1500
Is it common to have insulation material came loose like that, or the blow fan should be installed upside down,so it won't pull the insulation material down and block the fan caused it to failed?
Feeling confused and exhausted not knowing when my another blower will fail like this
